Aladin 2G1SCUBAPRO ALADIN 2GSAFETY CONSIDERATIONS You must carefully read and understand this entire manual before using your Aladin 2G. WARNINGDiving has many inherent risks. Even if you follow the instructions of this manual in a careful manner, itisstillpossiblethatyoumaybeseriouslyinjuredordiefromdecompressionsickness,oxygen toxicityorsomeotherinherentriskofscubawithNitroxorcompressedair.Unlessyouarefully aware of these risks and are willing to personally accept and assume responsibility for those risks, do not use Aladin 2G.Guidelines for the use of Aladin 2GThefollowingguidelinesforusingAladin 2Garederivedfromthelatestmedicalresearch and the recommendations of the American Academy of Underwater Sciences for diving with diving computers. Following these guidelines will greatly increase your safety while diving, but cannot guarantee that decompression sickness or oxygen toxicity will not occur.Aladin 2G is designed for dives with compressed air (21% O2) and Nitrox (22 to 100% O2) only. Do not use Aladin 2G for dives made with other mixed gases.It is absolutely necessary to check the set mixture before each dive and to compare it to the gas mixture currently used. Always remember: setting an incorrect mixture carries an inherent risk of decompression sickness and/or oxygen toxicity! Maximum deviation from the measured mixture must not exceed 1%O2. An incorrect gas mixture can be lethal!Only use Aladin 2G with open circuit breathing systems. Only use Aladin 2G for diving with an independent breathing apparatus.Aladin 2G is not designed for long term exposures with Nitrox.Always observe the visual and audible alarm signals. Avoid situations of increased risk which are marked with a warning sign in this operating manual.Aladin 2G has a ppO2 warning. The default limit is set at 1.4bar ppO2 max. It can be changed between 1.2 and 1.6bar.Frequently check the oxygen clock (CNS O2). Ascend and finish the dive if the CNSO2 exceeds 75%.Never dive deeper than the Maximum Operating Depth (MOD) pertinent to the gas mixture in use.Always check the diving limits considering the oxygen content and standard sports diving procedures (decompression sickness, oxygen toxicity).In accordance with the recommended maximum diving limit of all instructional agencies, do not dive deeper than 40 metres/130 feet.The danger of nitrogen narcosis has to be taken into consideration. Aladin 2G gives no warning about this.On all dives, with or without dive computer, make a safety stop for at least 3 minutes at 5metres (15 feet).All divers using dive computers to plan dives and indicate or determine decompression status must use their own computer, which they take with them on all dives.If Aladin 2G fails at any time during the dive, the dive must be terminated, and appropriate surfacing procedures (including a slow ascent and a 3 to 5 minute safety stop at 5 metres /15 feet) should be initiated immediately.Comply with the ascent rate and carry out any decompression stop required. If the computer should fail for any reason, you must ascend at a rate of 10m (30ft) per minute or less.English2SCUBAPRO ALADIN 2GOn any given dive, both divers in a buddy pair must follow the most conservative dive computer for that particular dive. Never dive without a buddy. Aladin 2G does not substitute for a dive buddy.Only make dives that are appropriate to your level of dive training. Aladin 2G does not increase your knowledge of diving.Always dive with back-up instruments. Make sure that you always use back-up instrumentation including a depth gauge, submersible pressure gauge, digital bottom timer or dive watch, and have access to decompression tables whenever diving with a dive computer.Avoid repeated ascents and descents (yo yo diving).Avoid repeated heavy workload while at depth.Plan the dives to be shorter if they are made in cold water.After finishing the decompression or at the end of a no-stop dive, the final stage of the ascent should be as slow as possible. You MUST be familiar with all signs and symptoms of decompression sickness before using Aladin 2G! Seek IMMEDIATE treatment for decompression sickness should any of these signs or symptoms occur after a dive! There is a direct correlation between the effectiveness of treatment and the delay between the onset of symptoms and the treatment for decompression sickness.Only dive with Nitrox after you have been thoroughly instructed by a recognized institution.Repetitive divesDo not start your next dive before your CNSO2% status has dropped below 40%.When diving with Nitrox, make sure your surface interval is long enough (just like diving with compressed air). Plan for a minimum surface interval of two hours. Oxygen, too, needs sufficient time to leave the body.Match gas mixture to the intended dive.Do not attempt a repetitive dive if the no-dive warning is visible on the display.Plan a day without diving once a week.If you have to change computers, wait at least 48 hours before carrying out your next dive.Diving after a reset of the remaining saturation (reset, see page 62, or battery replacement, see page 68) may lead you into potentially hazardous situations which could result in death or serious injury. After a reset of the remaining saturation do not dive for at least 48 hours. Altitude and divingDo not dive at altitudes higher than 4000m (13000ft).After a dive do not rise to altitudes that Aladin 2G prohibits via the flashing altitude range number (see page 31). Flying after divingAfter diving, wait at least 24 hours prior to flying.Aladin 2G dive instrument is a personal protective equipment in compliance with the essential safety requirements of the European Union directive 89/686/EEC. RINA SpA, Via Corsica 12, I-16128 Genoa, notified body no. 0474, have certified the conformity with the European Standard EN 13319:2000.EN13319:2000Divingaccessories-Depthgaugesandcombineddepthandtimemeasuringdevices-Functionaland safety requirements, test methods. Any information on decompression obligation displayed by equipment covered by this standard is explicitly excluded from its scope.5. 20103EnglishSCUBAPRO ALADIN 2GTABLE OF CONTENTSGuidelines for the use of Aladin 2G ......................................................................11.Introduction .............................................................................................................62.System and operation ............................................................................................92.1System description ....................................................................................92.2Operation ..................................................................................................92.2.1Push buttons .............................................................................92.2.2Water contacts .........................................................................102.2.3SmartTRAK.............................................................................102.2.4Switching on the display.........................................................142.2.5How to navigate Aladin 2G at the surface .................................152.2.6Checking the desaturation time ................................................152.2.7Checking the surface interval ...................................................162.2.8Displaying the date..................................................................162.2.9Checking the battery condition .................................................162.2.10Active backlight ........................................................................172.2.11Switching off the display ...........................................................172.2.12Alarm clock ..............................................................................172.3SOS mode ..............................................................................................173.Diving with Aladin 2G ...........................................................................................193.1Terminology / Symbols ............................................................................193.1.1General terminology / Display during no-stop phase ................193.1.2Display during decompression phase .......................................193.1.3 Nitrox information (O2 information) .............................................203.2Attention messages and alarms ...............................................................203.3Preparation for the dive ...........................................................................213.3.1Setting the gas mixture and ppO2 max............................213.3.2 Setting the MB level ..........................................................223.3.3 Preparation for diving with two gas mixtures ........................223.3.4 Preparation for the dive and function check..............................223.4Functions during the dive ........................................................................223.4.1Immersion ................................................................................223.4.2 Setting bookmarks ...................................................................233.4.3 Dive time.................................................................................233.4.4Current depth / O2% mix ..........................................................233.4.5 Max depth / Temperature .........................................................233.4.6Ascent rate ..............................................................................243.4.7Partial pressure of oxygen (ppO2 max) / Maximum Operating Depth (MOD) ............................................................................253.4.8Oxygen toxicity (CNS O2%) .......................................................263.4.9Nitrogen loading bar graph .......................................................263.4.10Decompression information ......................................................273.4.11Safety stop timer ......................................................................293.5Functions at the surface ..........................................................................293.5.1End of a dive ............................................................................293.5.2Residual nitrogen bar graph .....................................................293.5.3Desaturation time, No-y time and No-dive warning .................304SCUBAPRO ALADIN 2G3.6Diving in mountain lakes ..........................................................................313.6.1Altimeter ..................................................................................313.6.2Altitude ranges .........................................................................313.6.3Prohibited altitude ....................................................................323.6.4Decompression dives in mountain lakes ...................................324.Gauge mode ..........................................................................................................335.Apnea mode ..........................................................................................................355.1Switching the Apnea mode on and off .....................................................355.2Diving in Apnea mode .............................................................................366.Diving with microbubble (MB) levels ...................................................................376.1Comparison of dives with MB level L0 and MB level L5 ...........................386.2Terminology .............................................................................................386.2.1Display during MB no-stop phase ............................................386.2.2Display during level stop phase ................................................396.3Preparation for a dive with MB levels .......................................................396.3.1Setting the MB level .................................................................396.4Functions during the dive with MB levels .................................................406.4.1Level stop information ..............................................................406.4.2Total time of ascent ..................................................................416.4.3Decompression obligation ........................................................416.4.4Level stop and deco stop .........................................................426.5Complete a dive with MB levels ...............................................................437.PDIS (Prole Dependent Intermediate Stop) ......................................................447.1Introduction to PDIS (Prole-Dependent Intermediate Stop) .....................447.2How does PDIS work? ............................................................................457.3Special considerations when diving with more than one gas mixture (Aladin 2G) ..............................................................................................467.4Diving with PDIS ......................................................................................468. Diving with two gas mixtures ..........................................................................489.Dive planner ..........................................................................................................549.1Planning a no-stop dive ...........................................................................549.2Planning a decompression dive ...............................................................559.3Leaving the dive planner ..........................................................................5510.Logbook .................................................................................................................5610.1Survey .....................................................................................................5610.2Operation ................................................................................................5611.Settings ..................................................................................................................5811.1Altitude adjustment ..................................................................................5811.2Menu set 1 ...........................................................................................5811.3Menu set 2 ...........................................................................................6311.4Menu set 3 (Apnea) ...............................................................................665EnglishSCUBAPRO ALADIN 2G12.Appendix ................................................................................................................6812.1 Technical information ...............................................................................6812.2 Maintenance ...........................................................................................6812.2.1Replacing the battery ...............................................................6812.3 Warranty..................................................................................................7012.4Index .......................................................................................................711.Introduction6SCUBAPRO ALADIN 2G1.INTRODUCTIONCongratulationsonpurchasingAladin 2G andwelcometoSCUBAPRO.Fromnow on you will enjoy the assistance of the most extraordinarydivecomputer-equipped withSCUBAPROsmostinnovative technology - while diving. Aladin 2G enables you to use two different gasmixturesduringthesamedive. However,foraneasyreadingthismanual mainlyreferstodiveswithasinglegas mixture. Information for diving with two gas mixturesismarkedwithorhasbeen summarized in special chapters.WethankyouforchoosingAladin 2Gand wehopeyouwillenjoysafedivesinthe future!FurtherinformationonSCUBAPRO divecomputersandotherproductsby SCUBAPROcanbefoundonourweb page at www.scubapro.com. Tomakethismanualeasiertoread wewillusethetermAladin 2Gasan abbreviationforSCUBAPROAladin 2G diving computer throughout this booklet. Safety considerationsDivecomputersprovidediverswith data;they,however,donotprovidethe knowledgehowthisdatashouldbe understoodandapplied.Divecomputers cannotreplacecommonsense!Youmust therefore carefully read and understand this entire manual before using your Aladin 2G.Important remarks concerning signal words and symbolsThisoperatingmanualmakesuseofthe following icons to indicate especially impor-tant comments:) NOTE: Information and tips which are important for optimal use of the functions of Aladin 2G.Danger! WARNINGIndicatesapotentiallyhazardoussituation which, if not avoided, could result in death or serious injury.The following symbols are used in the operating manual:Flashing display->Page reference e.g. ->10 Valid only for dives with 2 gas mixturesAudible signals 4 s Audible attention signal Audible alarm signalInstructions for manual inputPress left push buttonPress and hold (1 second) left push buttonPress right push buttonPress and hold (1 second) right push buttonPress and hold (1 second) both push buttons Alternate displaysBypushingduringthediveyoucan scroll through alternate displays.How to get back to the rst display:scrolling with through the displaysafter 5 seconds: automatically if marked with after 5 seconds: directly by pushing 1x E.g. Max depth > Temperature > Temperature, Time > Max depthTime out after 5 seconds without operation. Display switches back to original indication.1.Introduction7EnglishSCUBAPRO ALADIN 2GQuick referenceMB level icon(input / MB level reduced)O2 mix icon (input)Current depthAltitude sectionsToo fastascentMax depthTemperatureMB levelMaximum OperatingDepth (MOD)Average depthDive numberSetting iconService iconLogbook iconAM/PM iconDesaturation iconDo not fly iconDive time / No-fly time /SOS durationRepetitive dive numberNo-stop time / Total ascent timeMB no-stop timeTime of day / Date Decompression depth / Level stop depth Desaturation time (DESAT)Duration of no-dive warningDuration of surface interval Partial pressure of oxygen ppO2Ascent time iconNo-stop indicator Level stop indicator Decompression stop obligation / Ignoreddecompression stopDecompression stop indicatorGauge iconAverage depth iconIcon for stopwatch and safety stop timerNo-dive warningO2 mixOxygen toxicity CNS O2%Ascent rateAlarm clock icon / Infrared icon Battery iconNitrogen loading bar (dive)Residual Nitrogen bar (surface) DesaturationBattery conditionDecompression stop duration Level stop durationPDIS iconApneaiconAMPMDESATOperating scheme-> means more information at pageEnter/ Scroll / Change settingBacklightExitWithoutoperationthedisplay switchesautomaticallybackto the time of day display and after 3minutesthedisplayswitches off. ///OffGas 1 O2%->21 Gas dO2%->48 MB LevelL0-L5->37Dive mode selection (Algo): deco/gauge/APNEA ->35Altitude adjustment->58Set 2->63Set 1->58Diveplanner->54Logbook->56Time of day display (Desat. time CNS O2%) ->15 Date ->16 Battery condition ->16 Alarm clock -> 63 UTC time zone-> 63 Time of day -> 64 24h / AM PM-> 64 Date-> 64 Display contrast-> 64 IrDA speed-> 65 Sound on / off-> 65 Electronic ID-> 65 Depth alarm-> 58 Dive time alarm-> 59 Safety stop duration-> 59 ppO2max-> 59 Reset to air-> 59 Deco gas on / off-> 60 PDIS-> 60 Unit system-> 60 Sait / fresh water-> 60 Backlight duration-> 61 Attention beep on / off -> 61 Water contacts on / off -> 61 Reset desaturation-> 62 Dual Depth alarm ->66 Incremental depthalarm ->66 Dive time intervalwarning ->66 Surface intervalwarning->67 Ascent speed alarm ->67 Water density ->67Set 3->63(Apnea)See also page 151.Introduction8SCUBAPRO ALADIN 2G(MB level)SLOWDEPTH DIVE TIMELogbookDisplay switched offGas 1 O2% DiveplannerPLnSurface intervalStatistic informationDeepestdiveLongest diveCumulativebottom timeNumberof divesDEPTHNO STOPDEPTH DIVE TIMEBottom time(MB-) No-stop timeNo-stop diveDecompression diveSTOPNODECOCNS O2%DEPTH DIVE TIMEOxygenconcentration+ppO2 max+( )After the oldest dive: +Depth++Repetitivedive number Starting timeSurfaceintervalif applicableCNS O2% at the endMinimumtemperatureAltitude range (if>0)SOS if applicableCNS O2%Dive numberO2 mixDive timeDate of the diveBatteryperformanceMaxdepth+SLOWDEPTH DIVE TIMEPage 3Page 2Page 1Gas d O2%Oxygenconcentration+ppO2 max+O2 mix deco gas (if used)Exit ExitConfirmation Confirmation2.System and operation9EnglishSCUBAPRO ALADIN 2G2.SYSTEM AND OPERATION2.1System descriptionAladin 2Gdisplaysallimportantdiveanddecompressiondataandhasamemorywhich stores the full dive data. The data can be transmitted with an infrared interface (IrDA) and SmartTRAK software to a Windows personal computer.SmartTRAK software CD is included with the Aladin 2G package.Infrared portSmartTRAKInfrared Interface(option)Aladin 2G2.2Operation) NOTE: On page 7 and 15 you will nd an operating schematic.2.2.1Push buttonsAladin 2G can be operated with two push buttons ( ). Operation of the push buttons is divided into press (/ ) and press and hold (1 second) ( / ).At the surface: Push buttonsWater contacts(one on front and one on back, inaccessible)/ Switch on Aladin 2G (time of day display)Comparable to the ENTER or RETURN key of a keyboardEnter into the displayed sub menuOpen the displayed settingConfirm or enter the displayed value or setting/ Scroll through a menu/ Once entered with into a sub menu or setting:Increase ( ) or decrease ( ) the indicated valueChange the settingOperate the backlightExit the current function or menu and switch to the time of day displaySwitch off Aladin 2GApnea mode:Start dive manually102.System and operationSCUBAPRO ALADIN 2GUnderwater dive mode (Algo):Access alternate displays Set bookmarkOperate the backlightActivate the safety stop timer (dive mode only, in depths < 6.5m / 20ft)Gauge mode (stopwatch):Restart Diving with two mixtures:Initiate switch to gasd or gas 1Interrupt switching processConfirm switch to gasd or gas 12.2.2Water contactsOn submerging in water the water contacts switch on Aladin 2G automatically. WARNINGIf you have chosen the option Water contacts off (set 1, ->58), Aladin 2G will turn on with adelayofupto1minuteintothedive.This willaffectfunctioningofthecomputer.Make surethatthecomputerisonbeforestarting the dive. 2.2.3SmartTRAK WithSmartTRAKyoucancongure Aladin 2G, transfer dive data to a personal computerandgraphicallydisplaythe data.Tostartthecommunication,turnon Aladin 2Gandplaceitsothatitsinfrared portisinfrontoftheinfraredinterface.If Aladin 2G detects an infrared device within range appears.Conguring Aladin 2GTocongureAladin 2G,selectDive ComputerSettingsunderOPTIONS onthemainmenubarofSmartTRAK afterhavingestablishedcommunication betweenyourPCandAladin 2G.The following window will appear: 2.System and operation11EnglishSCUBAPRO ALADIN 2GWhenmakinganychangestothesettingsviaSmartTRAK,you must press the "Write" icon for the changes to take effect.122.System and operationSCUBAPRO ALADIN 2GThe following settings may be changed with SmartTRAK or via set 1/set 2/set 3 directly on Aladin 2G:Scuba Setting Range Default PageDepth alarm 5 - 100m (20 - 330ft) on/off 40m (130ft),off 58Dive time alarm 5-195min, on/off 60min, off 59Safety stop duration 1-5min 3 minutes 59Maximum partial pressure ofoxygen (ppO2 max) 1.2-1.6bar 1.4bar 59Time limit to reset the O2% mix to airno reset / 1 - 48hrs no reset 59Deco gas on/off off 60PDIS (Profile Dependent Intermediate Stop)on/off off 60Unit system metric/imperial 60Water type on (salt water)/off (fresh water)on (salt water) 60Backlight illumination duration 2-12s ; push on / push off6s 61Audible attention signals on / off (SmartTRAK: selective)on 61Water contacts on / off on 61Reset desaturation on / off no reset 62Gauge mode on / off off 33Alarm clock 0 - 23h 59min, on/off 12:00, off 63UTC (Universal Time Change) zone13hrs, increments: 15min 63Time of day hours:minutes 6424 or AM/PM setting 24 (off) / AM/PM (on) 64Date 64Display contrast1 (low) -12 (high) 4 64IrDA speed setting (only set 2) low / high low 65Sound on / off on 65Apnea SettingDual Depth alarm 1 5-100m (20-330ft) 10m (35ft), off 66Dual Depth alarm 2 5-100m (20-330ft) 20m (65ft), off 66Incremental depth alarm 5-100m (20-330ft),way down, way up, both off5m (20ft), off 66Dive time interval warning 15s-10min, on/off 30s, off 66Surface interval warning 15s-10min, on/off 1 min, off 67Ascent speed alarm 0.1-5 m/s (1-15ft/s) 1 m/s (3 ft/s), off 67Water density 1.000-1.050 kg/l 1.025 kg/l 67The following data may be recalled with SmartTRAK:Number of past dives LogbookTotal duration of dives Temperature curveDeepest dive Alarms and attention messagesLongest dive BookmarksAtmospheric pressure Average depthDive profile Battery condition2.System and operation13EnglishSCUBAPRO ALADIN 2GDownloading your dives Aladin 2Gsmemoryallowsyoutostoreapproximately25 hours of SCUBA dive prole information in 4 second sampling intervals. In Apnea mode the display is updated faster (in 0.25s intervals and logbook in 1s intervals), therefore in Apnea mode at least 6h of Apnea proles will be stored. With SmartTRAK you can transfer this information to the PC in order to visualize and analyze your dives on the monitor. To download data from Aladin 2G,clickonNEWundertheLOGBOOKmenuto open and name a new logbook or open an existing logbook. Then click on the TRANSFER DIVES icon: a box will appear onthescreenidentifyingthecomputerbeingdownloaded, and a progress bar will show the status of the transfer. Youcanchoosebetweentransferringalldivesornewdives only (default setting) from Aladin 2Gs memory. If you choose to transfer new dives only, SmartTRAK will only transfer dives that are more recent than the most recent dive already saved in the PC logbook. To transfer all dives, you must change the defaultsettingbyselectingTransferunderDivesinthe main menu bar.Oncethedataisdownloaded,awindowwillshowyoua summarytableofalldives;fortheselecteddive,another window will show you its details. From these windows you can add and edit your dive information.Dive windowDive prole panelAlarm symbolsNotes panelDive computer displayTissuepanelPhysiologypanelDive information panel142.System and operationSCUBAPRO ALADIN 2GDive table2.2.4Switching on the display Time of day display automatically, on submerging in water* or when adaptation to atmospheric pressure is necessary; manually, by pushing or. If switched on with all segments light up for 5 seconds. Afterwards the display shows the time of the day, the O2 mix and the temperature. ) NOTE:Thisdisplayiscalledtimeofdaydisplay.Most navigationdescriptionsstartfromthisdisplay.Atthe surface Aladin 2G returns automatically to this display.If there is a remaining saturation from the last dive or from a change of altitude, Aladin 2G also displays the do not ytime,thedonotyicon,thecurrentaltituderange and the prohibited altitude range (->31).) NOTE:WhenAladin 2Gisinstateofrestnoinformation is displayed but the atmospheric pressure is continuously monitored.Ifachangeinaltituderangeisdetected, Aladin 2G switches on for 3 minutes automatically ->31.*Only if the option Water contacts on (set 1, ->61) is chosen. See warning ->10.2.System and operation15EnglishSCUBAPRO ALADIN 2G2.2.5How to navigate Aladin 2G at the surfaceStarting from the time of day display you can enter into different menus.-> means more information at pageEnter with into the function or sub menu.Withyou can switch to the time of day display.After 3 minutes without operation Aladin 2G returns to the time of day display.///OffGas 1 O2%->21 Gas dO2%->48 MB LevelL0-L5->37Dive mode selection (Algo): deco/gauge/APNEA ->35Altitude adjustment->58Set 2->63Set 1->58Diveplanner->54Logbook->56Time of day display (Desat. time CNS O2%)->15 Date ->16 Battery condition ->16 Alarm clock -> 63 UTC time zone-> 63 Time of day -> 64 24h / AM PM-> 64 Date-> 64 Display contrast-> 64 IrDA speed-> 65 Sound on / off-> 65 Electronic ID-> 65 Depth alarm-> 58 Dive time alarm-> 59 Safety stop duration-> 59 ppO2max-> 59 Reset to air-> 59 Deco gas on / off-> 60 PDIS-> 60 Unit system-> 60 Sait / fresh water-> 60 Backlight duration-> 61 Attention beep on / off-> 61 Water contacts on / off-> 61 Reset desaturation-> 62 Dual Depth alarm ->66 Incremental depth alarm ->66 Dive time intervalwarning->66 Surface intervalwarning ->67 Ascent speed alarm ->67 Water density ->67Set 3->63 (Apnea)2.2.6Checking the desaturation timeSLOWNOCNS O2%DESATDo not y iconNo-y timeNo-dive warningResidual nitrogenbarOxygen toxicity Desaturation timeFromthetimeofdaydisplayyoucan checkthedesaturationtime*bypushing .Desaturationtimeisdetermined either by oxygen toxicity, nitrogen saturation ortheregressionofmicrobubbles, dependingonwhichrequiresthelonger time.Thedisplayswitchesbacktothetime ofdaydisplayafter5secondswithout operation.*Onlydisplayedifthereisaremaining saturationduetothelastdiveorchange of altitude. WARNINGForthecalculationsofthedesaturation andno-ytimeitisassumedthatthediver breathes air while on the surface. 162.System and operationSCUBAPRO ALADIN 2G2.2.7Checking the surface intervalSurface intervalFromthetimeofdaydisplayyoucan check the surface interval by pushing (logbook menu).Thesurfaceintervalisthetimesincethe end of the last dive and is displayed as long as there is remaining saturation.2.2.8Displaying the date DateFromthetimeofdaydisplayyoucan displaythedatebypushing1xor2x (dependingonwhetherthereis desaturation time left).Thedisplayswitchesbacktothetime ofdaydisplayafter5secondswithout operation.2.2.9Checking the battery conditionNOBattery condition / performance From the time of day display you can check thebatteryconditionbypushing2xor 3x(dependingonwhetherthereis desaturation time left). Aladin 2G displays the estimated remaining battery performance for 5 seconds as a bar graph. If the bar graph shows 3 segments the battery warning appears ->21 and the battery has to be replaced ->68. WARNING Ifthebargraphshows2segments,the batterysymbolwillblink,onthesurface andindivemode,toalertthediverofa dangeroussituation:thebatterymaynot have enough energy to nish a dive. Replace the battery when the steady battery symbol appears (3 segments)!) NOTE: The temperature inuences the battery performance. In cold water it is lower than in warm water. If the battery shows 4 segments on the surface, it is possibleforittodropto3segments during the dive. If this is the case, the backlight will be temporarily disabled. See below. Diving not possible, dive planner and settings are disabledBattery performance high enough for diving.Battery warning appears. Backlight deactivated. Replace the battery! ->68 Bar graph interpretation2.System and operation17EnglishSCUBAPRO ALADIN 2G WARNINGFlashingbatterywarning.Audible alarmsandattentionmessages disabled! Backlight deactivated! Risk ofcomputermalfunction.Donotlet the battery reach this condition!Aladin 2Gmarksdivesstartedwith3or lesssegmentsinthelogbookwiththe battery symbol. Logbook information is not lost even when the battery is removed for a long time.2.2.10Active backlightThe display of Aladin 2G can be illuminated both on the surface and underwater.The backlight can be activated by pushing .Thelightwillturnoffautomatically. Thedefaultdurationis6seconds.The durationcanbechangedinset1(->58) orwithSmartTRAKbetween2and12 seconds.Itcanalsobesettopushon/ push off, in which case the light stays on until you turn it off by pressing again. Thebacklightcanonlybeactivatedifthe computer display is on.) NOTE:Repeatedactivationofthe backlight will reduce battery life. ) NOTE:Keepingthebacklight permanentlyonrepresentsasevere strainonthebattery.Inwarm waters(20 C/68 Fandabove), anewbatterycansustain20-40 1-hour dives with the backlight always on.Incoldwaters(4 C/40 Fand below)thelowbatterywarningmay comeonwithintherstdive.For temperatures between 4 C/40 F and 20 C/68 Fthelifeofanewbattery will be somewhere between 1 and 20 1-hourdives.Aladin 2Gmonitorsthe batterylevelthroughouteverydive, and if the available energy drops below thewarningthreshold,Aladin 2Gwill automaticallydisablethebacklightto prevent a computer shut down. 2.2.11Switching off the displayFrom the time of day display you can switch off Aladin 2G by pushing.OnthesurfaceAladin 2Gswitchesoff automaticallyafter3minuteswithout operation. 2.2.12Alarm clockThe alarm clock goes off only at the surface.Ifthealarmclockison,thetimeofday display shows.Whenalarmistriggered:ashesand specialattentionbeepsareplayedfor30 seconds or until the user presses a button.Setting the alarm clock: ->63 (set 2)2.3SOS modeNODESATTime remaining until SOS mode switches off automaticallyActivation: automaticIf the diver remains above a depth of 0.8m (3ft)formorethanthreeminuteswithout observingaprescribeddecompression stop, the computer will automatically switch into SOS mode after the dive.Push to see the SOS sign and the remaininglengthoftheSOSmode.The 182.System and operationSCUBAPRO ALADIN 2Gdivewillbeenteredinthelogbookwith SOS. TheSOSmodewillbeunlockedafter 24 hours.While in SOS mode, the computer cannot beusedfordiving.Thecomputercan however be used in gauge mode ->33. All segmentsinthenitrogenloadingbarwill ash throughout the dive.Divingwithin48hoursaftertheendofan SOSmodewillresultinshorternostop times or longer decompression stops. WARNING Serious injury or death may result if a diver doesnotseekimmediatetreatmentshould anysignsorsymptomsofdecompression sickness occur after a dive. Donotdivetotreatsymptomsofdecom-pression sickness! Diving in SOS mode is extremely dangerous and you must assume full responsibility for suchbehavior.SCUBAPROwillassumeno liability.Adivingaccidentcanbeanalyzedatany timeinthelogbookanddownloadedtoa PC by means of the infrared interface (IrDA) and SmartTRAK software. 3.Diving with Aladin 2G19EnglishSCUBAPRO ALADIN 2G3.DIVING WITH ALADIN 2G3.1Terminology / SymbolsThe information on the display of Aladin 2G variesdependingonthekindofdiveand the dive phase. ) NOTE:Forinformationaboutdiving withmicrobubble(MB)levelssee ->37. Specic features of Diving with twogasmixtures,aredescribedin chapter 8 ->48.3.1.1General terminology / Display during no-stop phase37min dive timeElapsed bottom timeNo-stop time24minCurrent depth26.2mDecompression phaseDive phase during which surfacing is allowed only after decompression stops are completed.No-stop phaseDive phase during which surfacing is allowedwithout stop.TimeDepthAscent rate(Only while ascending)%Current depthIn metres (feet)Max depthMax depthreached during the dive No-stop timeRemaining timeat a given depthduring which ascentis allowed withoutdecompression stop (min).Nitrogen loading barOxygen toxicityCNS O2% Dive timeDuration of the dive (min)CNS O2%DEPTHNO STOPDIVE TIMEMax depth(Max depth >) Temperature > Temperature , O2 mixand time of day> (Max depth)3.1.2Display during decompression phase Total ascent time to surface (7min)6m35.7mDecompression range No-stop range3mTimeDepthDecompression stop depthDeepest stage is displayed.Decompression stopduration Prescribed duration of thedecompression stop at thedisplayed decompressionstage (minutes).Total ascent time Including decompression stops in minutes. Decompression stopAll required decompressionstops must be observed.Deepestdecompressionstop depth2min Decompressionstop durationSTOPNODECOCNS O2%DEPTH DIVE TIME20 3.Diving with Aladin 2GSCUBAPRO ALADIN 2G3.1.3 Nitrox information (O2 information)Fordiveswithcompressedairinnormal recreational diving, nitrogen is the decisive gasforthedecompressioncalculations. When diving with Nitrox, the risk of oxygen toxicity rises with the increase of the fraction ofoxygenandtheincreaseofdepthand canlimitdivetimeandthemaxdepth. Aladin 2Gincludesthisinthecalculations and displays the necessary information:O2% mixFractionofoxygen:The fraction of oxygen in the Nitrox mixture can be set between 21% (normal compressed air)and100%in1%increments.Your selectedmixwillbethebasisforall calculations.ppO2 maxMaximumallowedpartial pressureofoxygen:thehigherthe fractionofoxygeninthemixture,the shallower the dive depth at which this value of the partial pressure of oxygen is reached. The depth at which ppO2 max is reached is called Maximum Operating Depth (MOD).Whenyouenterthesettingsforthegas mixture, Aladin 2G will display the ppO2 max limitsettingandthecorrespondingMOD. Aladin 2Gwarnsyouaudiblyandvisually oncethedepthisreachedatwhichthe ppO2 reaches the maximum allowed value ->25.) NOTE: Default setting of ppO2 max is 1.4bar.The value of ppO2 max can be set by means of SmartTRAK or with set 1 between 1.2 and 1.6bar (->59). It can also be changed at the time of setting the gas mixture (->21). The CNS O2% value/alarm is not influenced by the selected ppO2 max setting.CNSO2%Oxygentoxicity:Withthe increasedpercentageofoxygen,the oxygeninthetissues,especiallyinthe centralnervoussystem(CNS),becomes important. If the partial pressure of oxygen risesabove0.5bar,theCNSO2value increases, if the partial pressure of oxygen is below 0.5bar, the CNS O2 value decreases. TheclosertheCNSO2valueisto100%, thecloserthelimitwheresymptomsof oxygen toxicity can occur.Depthat which ppO2 reaches 0.5bar for three commonly used mixes21% 13m (43ft)32% 6m (20ft)36% 4m (13ft)ppO2 0.21bar0.5barCNSO2%decreasesCNSO2%increases WARNINGNitroxdivingmayonlybeattemptedby experienceddiversafterpropertrainingfrom an internationally recognized agency.3.2Attention messages and alarmsAladin 2Gdrawsthediversattentionto certainsituationsandwarnsthediver ofunsafedivingpractices.Attention messagesandalarmsarevisualand/or audible.) NOTE:The audible attention messages can be switched off in set 1 ->58 or SmartTRAK. With SmartTRAK they can be switched off selectively.In addition, the sound can be turned off completely in set 2 ->65. WARNINGIfyouturnoffthesoundyouwillhaveno audiblewarnings.Withoutaudiblewarnings youcouldinadvertentlygetintopotentially hazardoussituationswhichcouldresultin death or serious injury. 3.Diving with Aladin 2G21EnglishSCUBAPRO ALADIN 2G WARNINGSerious injury or death may result from failing toimmediatelyrespondtoalarmsgivenby Aladin 2G.3.2.1 Attention messagesAttentionmessagesarecommunicated tothedivervisuallybysymbols,lettersor ashing gures. In addition, two short audible sequencescanbeheard(inanintervalof 4 seconds) in two different frequencies under water. 4s (can be switched off)Attention messages come up in the following situations (more information can be found on the listed pages):Page Maximum Operating Depth / ppO2 max is reached25 Set max depth is reached24 Oxygen toxicity reaches 75%26 No-stop time less than 3 minutes27 Prohibited altitude (surface mode)31 Entering decompression (when diving with L0)27 Half of set dive time is reached23 Set dive time is reached23 Depth for tank switch has been reached 52Diving with MB levels (L1-L5): MB no-stop time = 040 MB level stop ignored40 MB level reduced41 Enteringdecompressionwhendivingwith MB level L1-L5 413.2.2 AlarmsAlarmsaregiventothedivervisuallyby ashing symbols, letters or gures. In addition, an audible sequence in one frequency can be heard during the whole duration of the alarm.Analarmoccursinthefollowingsituations (moreinformationcanbefoundonthelisted pages): Page Oxygen toxicity reaches 100%26 Ignored decompression28 Exceeding the prescribed ascent rate 24(Particular scale of beeps, ->25) Altitude alarm31Low battery alarm (without audible alarm): the battery icon appears if the battery has to be replaced68Apnea mode alarm353.3Preparation for the diveYou have to check the settings of Aladin 2G especiallybeforetherstdive.Allsettings canbecheckedandchangeddirectlyat Aladin 2G or via SmartTRAK. 3.3.1Setting the gas mixture and ppO2 max WARNINGBeforeeverydiveandafterchangingthe tank,makesurethatthesettingsforthegas mixturecorrespondwiththecurrentmixture used. An incorrect setting causes Aladin 2G to miscalculate this particular dive. If the fraction of oxygen is set too low this can lead to oxygen poisoning without warning. If the value is set toohighdecompressionsicknessmayoccur. Inaccuraciesinthecalculationsarecarried over to repetitive dives. For dives with two gas mixtures please read page 48 for further reference.To set the gas mixture, Aladin 2G must be in user mode (time of day display). or until 1. Push or until the GAS 1 O2 menu appears.2. Conrm that you wish to change the oxy-gen fraction of gas 1 by pushing.22 3.Diving with Aladin 2GSCUBAPRO ALADIN 2GMax Operating Depth MODChange the O2% mix by (+) and ()ppO2max3. Change the oxygen fraction in incre-ments of 1% by pushing or . Aladin 2G will display the current fraction of oxygen, the maximum partial pressure limit (ppO2 max) and the MOD.4. Confirm the selected percentage with .Change the ppO2 max by (+) and ()5. By pushing or you can change the ppO2 max for the chosen fraction of oxygen down to 1.0bar. Ala-din 2G will now display the correspond-ing MOD for the new ppO2 max.6. Confirm your ppO2 max settings with .) NOTE: Without confirmation the display will disappear after 3 minutes and your entries will not be accepted.Automatic reset of the O2% mix to 21% can be set with set 1 ->58 or SmartTRAK between 1 and 48 hours or to no reset (default). 3.3.2 Setting the MB levelSee chapter 6, ->373.3.3 Preparation for diving with two gas mixturesSee chapter 8, ->483.3.4 Preparation for the dive and function checkSwitch on Aladin 2G by pushing and checkthetestdisplay:Areallelementsof the display activated? Do not use Aladin 2G ifthedisplaydoesnotshowallelements. WhenswitchingonAladin 2Gwith, the test display will not appear. WARNINGCheckthebatterycapacitybeforeeachdive ->16.3.4Functions during the dive3.4.1ImmersionIf the water contacts are deactivated (->61), switch on Aladin 2G before immersion. WARNINGIf you have chosen the option Water contacts off (set 1 or SmartTRAK), Aladin 2G will turn on with a delay of up to 1 minute into the dive. Thiswillaffectfunctioningofthecomputer. Makesurethatthecomputerisonbefore starting the dive. Afterimmersion,startingatadepthof about0.8m(3ft),alldivingfunctions 3.Diving with Aladin 2G23EnglishSCUBAPRO ALADIN 2Garemonitored,i.e.depthanddivetime displayed,maxdepthstored,saturation oftissuescalculated,no-stoptimeor decompressionprognosisdetermined, ascentratecontrolledanddisplayedand thecorrectnessofthedecompression procedure supervised.3.4.2 Setting bookmarksDuring the dive you can create bookmarks in your dive prole by pressing. The logbookiconappearsfor4seconds and an audible signal conrms the creation of the bookmark. These bookmarks will be graphicallydisplayedinthediveproleof SmartTRAK.3.4.3 Dive time DEPTHNO STOPDIVE TIMEDive timeThe whole time spent below a depth of 0.8m (3ft)isdisplayedasdivetimeinminutes. Thetimeabove0.8m(3ft)iscountedas divetimeonlyifthediverdescendsagain below 0.8m (3ft) within 5 minutes.Whilethedivetimeisrunning,thecolons ontherightoftheguresareashingin onesecondintervals.Maximumdivetime displayed is 199 minutes.) NOTE: If a dive lasts longer than 199 minutesthedivetimedisplaystarts again at 0 minutes. WARNINGHalf time alarm (turn around alarm) ->59 Ifhalfofthesetmaximumdivetimehas elapsed,anaudiblesignalgoesoffandashes for 1 minute. WARNINGSet dive time has elapsed ->23, 59Anaudiblesignalgoesoffandthedivetime starts ashing.3.4.4Current depth / O2% mixCurrent depth is given in 10cm increments inmetricsettingand1ftincrementsin imperial setting. SLOWDEPTHNO STOPDIVE TIMECurrent depthO2% mix Nitrogen loading barDEPTH DIVE TIMEAt a diving depth of less than 0.8m (3ft) the display shows .TheO2%mixisdiplayedaslongas CNSO2%=0andnoascentspeedis indicated.3.4.5 Max depth / TemperatureCNS O2%DEPTHNO STOPDIVE TIMEMax depthCNS O2% 24 3.Diving with Aladin 2GSCUBAPRO ALADIN 2GMaxdepthisonlydisplayedifitexceeds thecurrentdepthbymorethan1m(3ft) (maximum indicator function). If max depth isnotdisplayed,Aladin 2Gshowsthe temperature.> Temperature, O2 mix > Temperature, Time, O2 mix > Max depthSet max depth reachedDEPTHNO STOPDIVE TIME4s WARNINGIf the max depth set with SmartTRAK or set 1 has been reached (default 40m/130ft) and the depth alarm is turned on, the depth display will ash.Ascend until the depth stops ashing.3.4.6Ascent rateSLOWDEPTHNO STOPDIVE TIMEAscent rateOptimalascentratevariesdependingon depthbetween7and20m/min(23and 67ft/min).Itisdisplayedasapercentof thereferencevariableascentrate.Ifthe ascent rate is greater than 100% of the set value, the black arrow SLOW appears. If theascentrateexceeds140%,thearrow starts ashing.Aladin 2Gprovidesanaudiblealarmifthe ascent rate is 110% or greater. The intensity ofthealarmincreasesindirectproportion tothedegreethattheprescribedascent rate is exceeded. WARNINGThe prescribed ascent rate must be observed at all times! Exceeding the prescribed ascent ratecanleadtomicrobubblesinthearterial circulation which can lead to serious injury or death due to decompression sickness.In case of an improper ascent Aladin 2G may require a decompression stop even within the no-stop phase because of the danger of microbubble formation.The decompression duration necessary for the prevention of microbubbles can increase massively if the ascent rate is exceeded.From great depth a slow ascent may cause heightened saturation of tissues and an extension of both decompression duration and total ascent time. At shallow depth, a slow ascent may shorten the decompression duration. 3.Diving with Aladin 2G25EnglishSCUBAPRO ALADIN 2GDisplay of the ascent rate has the priority over CNS O2. WARNINGSLOWSLOWSLOWSLOW%%%%Ascent rate Visual alarm Audible alarmReduce ascent rate Excessiveascentratesforlongerperiods are entered in the logbook.Thefollowingascentratescorrespondto the 100% value in Aladin 2G.depth (m) speed (m/min) depth (ft) speed (ft/min) (Max depth)) NOTE: Whereas the quantitative information relative to L0 can be seen by pressing the right button,qualitativeinformationisalwaysvisibleonthedisplayinformofthenitrogen loadingbar.Inparticular,whentheL0no-stoptimeislessthanthreeminutes, thenitrogenbarwillash->27.Thiswillhelpyouavoidenteringinadvertentlyinto decompression.6.2.2Display during level stop phaseLowest level stop depthTotal ascent time (14min) 3min Level stop durationMB no-stop phaseTimeDepthLevel stop durationThe duration of a level stop at a given level stop depth is displayed.Level stop depthThe deepest level stop is displayed.Total ascent time including level stopsLevel stop phaseTo complete the dive without cascadingto a lower MB level all requested level stops must be observed. 35.7m9m/30ft6m/20ft3m/10ftSTOPSLOWCNS O2%DEPTH DIVE TIMENitrogenloading bar relative to LO ->26(Max depth >) Temperature > MB level active > No-stop time or deco information relative to L0 > Temperature and time of day > (Max depth)6.3Preparation for a dive with MB levels6.3.1Setting the MB levelTo change the MB level Aladin 2G must be in user mode (time of day display). or until 1. Push or until the symbol for MB levels appears.2. Conrm that you wish to change the displayed MB level by pushing.3. Change MB level by pushing or .4. Conrm the selected MB level with. Withoutconrmationthedisplaywill disappearafter3minutesandyourentries will not be accepted.Aladin 2Gwilldisplaythesymbolto conrmthatanMBlevelbeyondL0(L1-L5)hasbeenchosen.Duringthedivethe ->2740SCUBAPRO ALADIN 2G6.Diving with microbubble (MB) levelsMBlevelisshownbypressing2x. If however a level stop is ignored, the new MB level is shown (->41).) NOTE: MBlevelshaveaninuenceonthe dive planner.6.4Functions during the dive with MB levels6.4.1Level stop informationMB no-stop timeWhiledivingwithMBlevelsL1toL5 Aladin 2G will display the MB no-stop time instead of the ordinary no-stop time. Within theMBno-stoptimenolevelstopsare required.NO STOP and the MB level symbol are visible. The remaining MB no-stop time is shown in minutes.DEPTHNO STOPDIVE TIMEMB no-stop timeNitrogen loading barrelative to L0) NOTE: Information and alarms for MB no-stop time and ordinary no-stop time are the same (->27).No-stop time relative to L0 is shown by pressing 3x (see)Regardless of the MB level, we generally recommend to perform a slow ascent during the last few metres / feet.Level stopSTOPNOCNS O2%DEPTH DIVE TIMEDeepest level stop depthTotal time of ascentLevel stop durationLevel stop iconOnenteringthelevelstopphase,NO STOPdisappearsandthearrow STOPappears.The STOParrowashesfor8 secondsandanaudibleattentionbeep goesoff.Tocompletethedivewithout cascading to a lower MB level, all requested level stops must be observed. Thedeepestlevelstopisdisplayedin metres(feet).Thedisplay2:3m(2: 10ft) means that a level stop of 2 minutes at a depth of 3 metres (10 feet) has to be observed.DecoinformationrelativetoL0 is shown on an alternate display (see ).Whenalevelstophasbeennished,the nexthigherlevelstopifpresentis displayed.Whenalllevelstopshavebeen observed, the arrow STOPextinguishes and NOSTOPreappears.Theindicationof time shows the MB no-stop time again.STOPCNS O2%DEPTH DIVE TIME4sLevel stop ignored41EnglishSCUBAPRO ALADIN 2G6.Diving with microbubble (MB) levels WARNINGTheattentionmessageLevelstopignored isactivatediftherequestedlevelstopisnot observed. An attention beep* goes off and the arrow STOP,thedepthanddurationofthe ignored level stop begin ashing.Tocompletethedivewithoutbeingreduced to a lower MB level, you must descend to the prescribed depth immediately!STOPCNS O2%DEPTH DIVE TIME4sMB level reducedNew MB level WARNINGThe warning MB level reduced is activated if the diver ascends more than 1.5m (5ft) above the required level stop. Aladin 2G reduces the MB level, an attention beep* goes off and the new MB level is shown in the lower left corner. Tocompletethedivewithoutbeingfurther reducedtoanevenlowerMBlevelthenew level stop must be observed.) NOTE: *Attention beeps can be suppressed with set 1 (->61) or via SmartTRAK.6.4.2Total time of ascentSTOPNOCNS O2%DEPTH DIVE TIMETotal ascent timeAladin 2G displays the level stop information and the total time of ascent. This includes the time of ascent as well as all level stops.) NOTE: Thetotaltimeofascentiscalculated on the basis of the prescribed ascent rate. Total time of ascent can be subject to change if the ascent rate is not ideal (100%).6.4.3Decompression obligationAladin 2Gcalculatesanddisplayslevel stops to reduce microbubble formation, but it also calculates the divers decompression data. WARNINGAvoiddecompressiondiveswhendivingwith MB levels.DIVETIMESTOPDECOCNS O2%DEPTH4sHow to avoid decompression stops:Check ordinary no-stop time by pushing until L0 appears.42SCUBAPRO ALADIN 2G6.Diving with microbubble (MB) levelsObserve the nitrogen loading bar (it is relative to L0) ->27, ->38, ->39.If the nitrogen loading bar flashes (less than 3 minutes to deco): ascend slowly a few metres/feet. WARNINGAt the beginning of a decompression phase an attention beep goes off and theDECOsymbol ashes for 8 seconds.Inordertopreventadivewithlong decompressionstopsitisrecommendedthat youascendafewmetres/feetonseeingthis message.STOPDECOCNS O2%Decompression obligationLevel stop informationIf decompression stops become obligatory, theDECO symbolwillbedisplayed.The totalascenttimewillnowalsocontaina decompression stop.6.4.4Level stop and deco stopWhen the level stop depth equals the depth oftherstobligatorydecompressionstop and if you are within 1.5m /5ft of the stop depthitself,Aladin 2Gshows STOPDECOand STOP(levelstop).Theindicatedduration refers to level stop duration.Sincelevelstopsaremorerestrictive thandecompressionstops,whenall decompressionobligationshavebeen observedthedisplaychangesfrom STOPDECO STOPto STOP only.MB levelL0L5L0 L53m/10ft Deco stop durationLevel stop durationDepthTimeSTOPSTOPDECOSTOPDECOSTOPNO STOPNO STOPLevel stop duration Decompression stop depth = level stop depth43EnglishSCUBAPRO ALADIN 2G6.Diving with microbubble (MB) levels6.5Complete a dive with MB levels SLOWAdivewithMBlevelsiscompletedthe same way as a dive without MB levels (L0) (->29), save for the following exceptions: IftheMBlevelhasbeenreducedduring thedive,Aladin 2Gwilldisplayaashing MBlevelsymbolandthecurrentMBlevel for ve minutes after reaching the surface. The dive is then completed and Aladin 2G changestousermodewiththeMBlevel switching back to the original MB setting. RepetitivedivesandMBlevels:Ifduring adivealevelstopisbeingignoredand thediverstartsanotherdescentshortly afterwards,Aladin 2Gmightimmediately requestlevelstops.Tocompletethedive with the initially set MB level all level stops must be observed.44SCUBAPRO ALADIN 2G7. PDIS (Prole Dependent Intermediate Stop)7.PDIS (PROFILE DEPENDENT INTERMEDIATE STOP)7.1Introduction to PDIS (Prole-Dependent Intermediate Stop)The main purpose of a dive computer is to track your nitrogen uptake and recommend a safe ascent procedure. Diving within the socalledno-stoplimitsmeansthatatthe end of the dive you can ascend directly to thesurface,albeitatasafeascentrate, whilefordivesoutsideoftheno-stoplimit (so-called decompression dives), you must perform stops at certain depths below the surface and allow time for excess nitrogen tobeexpelledfromyourbodybefore nishing the dive.Inbothcases,itcanbebenecialtostop for a few minutes at an intermediate depth betweenthemaximumattaineddepth during the dive and the surface or, in case of a decompression dive, the rst (deepest) decompression stop.An intermediate stop of this kind is benecial assoonastheambientpressureatthat depthislowenoughtoensurethatyour body is predominantly offgassing nitrogen, even if under a very small pressure gradient. In such a situation, you can still cruise along the reef and enjoy the dive, while your body gets a chance to slowly release nitrogen. In recent times, so called deep stops have beenintroducedinsomedivecomputers andtables,denedashalfthedistance fromthemaximumreacheddepthand thesurface(orthelowestdecompression stop).Spending2or15 minutesat 30m/100ftwouldresultinthesamedeep stop of 15m/50ft. WithPDIS,asthenamesuggests, Aladin 2Ginterpretsyourdiveprole andsuggestsanintermediatestopthat isafunctionofyournitrogenuptakeso far.ThePDIstopwillthereforechange throughthecourseofthedivetoreect thecontinuouslychangingsituationin yourbody.Alongthesamelines,PDIS willaccountfortheaccumulatednitrogen frompreviousdives,hencePDISisalso repetitive-divedependent.Conventional deep stops completely ignore these facts.Thefollowinggurequantiestheextent ofPDISandillustratesitsdependenceon cumulative nitrogen uptake for two sample dive proles. This gure also demonstrates theconceptualdifferencebetweenPDIS and the rather rudimental deep stops.Specically,thegurecomparestwodive proles to a maximum depth of 40m/132ft but otherwise very different. Prole 1 stays at40m/132ftfor7 minutes,thenascends to30m/100ftfor3 minutes,followedby 12 minutesat20m/65ft.Prole 2stays lessthantwominutesat40m/132ft,then ascendsto21m/69ftandstaystherefor 33 minutes. Both dive proles are no-stop dives to the limit of entering decompression. Thesolidlinewithtrianglesrepresentsthe PDIS depth as displayed on the computer screenduringthecourseofthedivefor prole 1,thedottedlinewithtriangles represents the PDIS depth as displayed on thecomputerscreenduringthecourseof prole 2.Onecanseethatthedisplayed PDISdepthincreasesasmorenitrogen isaccumulatedinthebody,butdoesso very differently in the two dives due to the differentexposureinthetwoproles.The PDIstopiscarriedoutat25 minutesfor prole 1andat37 minutesforprole 2, followed by the safety stop at 5m/15ft. The solid line with open circles on the other handrepresentsthedepththatwouldbe displayedbyacomputerfollowingthe conventionaldeepstopmethod,andit would be the same for the two dive proles. Deepstopscompletelyignoreanyfacts aboutthedivesthemselvesasideforthe max depth.45EnglishSCUBAPRO ALADIN 2G7. PDIS (Prole Dependent Intermediate Stop)7.2How does PDIS work?Themathematicaldecompression modelinAladin 2G,calledZH-L8ADT MBPMG,tracksyourdecompression statusbydividingyourbodyinto8 so-calledcompartmentsandmathematically followingtheuptakeandreleaseof nitrogen in each with the appropriate laws ofphysics.Thevariouscompartments simulate parts of your body such as central nervous system, muscles, bones, skin and so on. The depth of the PDI stop is calculated as that at which the leading compartment for thedecompressioncalculationswitches fromongassingtooffgassing,andthe diverisadvisedtoperforma2-minute stop above the displayed depth (this is the oppositeofadecompressionstop,where you are asked to remain just beneath the displayeddepth).Duringthisintermediate stop,thebodyisnottakingupanymore nitrogenintheleadingcompartment,but ratherreleasingnitrogen(thoughunder averysmallpressuregradient).This, combinedwiththerelativelyhighambient pressure, inhibits bubble growth.Itshouldbenotedthatthetwofastest compartments,with5and10 minutes halftimesrespectively,arenotconsidered forthedeterminationofthePDIstop depth.Thisisduetothefactthatthese compartmentsareonlyleadingforvery short dives, for which an intermediate stop is not required at all.) NOTE: ThePDIstopisnotamandatory stop and it is NOT a substitute for the 3-5 minute safety stop at 5m/15ft. WARNINGEvenwhenperformingaPDIstop,youstill MUST perform a safety stop at 5m/15ft for 3 to 5 minutes. Performing a 3 to 5 minute stop at 5m/15ft at the end of any dive is still the best thing you can do for yourself!46SCUBAPRO ALADIN 2G7. PDIS (Prole Dependent Intermediate Stop)7.3Special considerations when diving with more than one gas mixture (Aladin 2G)Switching to a higher oxygen concentration mix during the dive inuences the PDI stop. This needs to be accounted for, in line with the predictive nature of multigas handling in ZH-L8 ADT MB PMG.Whendivingwithmorethanonegas mixture, Aladin 2G displays the PDIS depth according to the following rules:if the PDI stop calculated for the bottom mix (gas 1) is deeper than the switch depth, than this calculated value is displayed;if the PDI stop calculated for gas 1 is shallower than the switch depth to gasd, then the displayed PDI stop is a function of gasd. In case of a missed gas switch, Aladin 2G revertstothePDIstopfortheactively breathed mix.7.4Diving with PDIS) NOTE: To use the PDIS feature, you must set PDIS to ON in the PDIS menu under Set 1. The default setting is OFF.WhenthecalculatedPDIstopisdeeper than8m/25ft,Aladin 2Gshowsiton thedisplayandcontinuestodosountil youreachthedisplayeddepthduring anascent.Thedisplayedvaluechanges duringthediveasAladin 2Gtracksthe uptakeofnitrogeninthe8 compartments and updates the PDIS depth accordingly to reect the optimum at all times.ThePDISdepthisshowninthelowerleft corner,withthelabelPDIS.Duringano-stop dive, as soon as you reach that depth duringanascent,a2-minutecountdown willappearinplaceoftheno-stopvalue withlabelSTOP.Inaddition,thePDIS labelwillblink.Youcanhaveoneofthree situations: you have spent 2 minutes within 3m/10ft above the indicated depth. The countdown timer disappears and the PDIS value is replaced by the label YES as an indication that you have performed the PDI stop; you have descended by more than 0.5m/2ft below the PDIS. The countdown timer disappears and will reappear again, starting at 2 minutes, the next time you ascend to the PDIS depth;you have ascended by more than 3m/10ft above the PDIS. The PDIS value and countdown timer are replaced by the label NO to indicate the fact that you have not performed the PDI stop.If Aladin 2G is displaying a decompression obligation when you reach the PDIS depth duringanascent,allrulesapplythesame way,butthe2-minutecountdownrunsin thebackgroundandisnotdisplayedon the screen. The PDIS label however will still be blinking to show you that you are in the PDIS range.47EnglishSCUBAPRO ALADIN 2G7. PDIS (Prole Dependent Intermediate Stop)) NOTE: Aladin 2G issues no warnings relating to a missed PDI stop.WhendivingwithMBlevels,PDISfollows thesamerulesasdescribedabove.MB levels,however,introducestopsearlier and deeper than the L0 base algorithm. As such, the PDIS display may be delayed and for certain dives it may not be displayed at all. This for instance would be the case for a shallow dive with air (21% oxygen) and MB level L5.48SCUBAPRO ALADIN 2G8. Diving with two gas mixtures8. DIVING WITH TWO GAS MIXTURES1 ddBottom mix (gas 1)TimeSwitching depth(MOD gas d)Deco mix (gas d)Depth) NOTE: Thefollowingchapterdealswiththe characteristicsofdivingwithtwo gases.Aladin 2G enables you to use two different Nitroxmixturesduringthesamedive. Tank 1 contains the bottom mix (gas 1) and tank d contains the deco mix (gas d). Switching the deco gas option on and off In order to enable two-gas diving you must turnonthedecogasoptionintheSET1 menu ->60. Setting the gas mixture and the depth for changing the gas mixtured 1O2 fractionRange of O2 fraction100%21%Duringdiveswithtwogasmixturesthe bottommix(gas1)containsthelower fractionofoxygen.Aladin 2Gwillonly acceptsettingscorrespondingwiththis order. WARNINGFor gas mixtures having an oxygen percentage of80%orgreatertheppO2isxedat1.6bar and cannot be altered in any way.Depth for change of gas mixture, MODppO2 maxProcedure:1. Enter the setting for the fraction of oxy-gen and the ppO2 max (MOD) for gas 1 49EnglishSCUBAPRO ALADIN 2G8. Diving with two gas mixtures(bottom mix) according to the instruc-tions on page 21 (points 1-6). 2. Repeat the process in the Gas d O2 menu to set the oxygen fraction and ppO2 max for gas d. Note that in this case the resulting MOD corresponds to the depth at which you plan to switch from gas 1 to gas d during the ascent phase (switch depth). 3. If you set gas d to O2%, Aladin 2G will compute the dive considering gas 1 only.Aladin 2Gwillonlyacceptagasswitch depth(MODgasd)asinputwherethe maximumpartialpressureofoxygen (ppO2 max), as pre-set manually (->21 point 5)orbymeansofSmartTRAK,isnot exceeded. ) NOTE: During the ascent an audible and visual attention message will indicate that you have reached the depth which requires the change to gas d ->52.Without confirmation with the display will disappear after 3 minutes and your entries will not be accepted.If the deco gas option is turned on and the oxygen fraction of gas d is set to a value other than --O2%, in surface mode and up to a depth of 0.8m Aladin 2G will display 2G in the lower right corner of the display instead of a percentage value.) NOTE: The time to reset the O2% mix to air can be set with SmartTRAK between 1 hour and 48 hours or to no reset (default). After the reset, the oxygen fraction of gas 1 is set to 21% and gas d is set to O2% (single gas dive).Switching between single-gas and two-gas divingIf gas d is not going to be used during the next dive you can either set it to O2% (->48, point 2) or you can turn off the deco gas option in SET 1. When you turn off the decogasoptioninSET1,thesettingin the Gas d O2 menu remains but Aladin 2G calculates the dive using gas 1 only.Ifthedecogasoptionisturnedoff,the GAS dO2menuwilldisplayOFFinthe lowerleftcorner(insteadofanMOD)and the ppO2 setting will not appear.Functions during a dive with two gas mixtures WARNINGDivingwithmorethanonegasmixture represents a much higher risk than diving with asinglemixture,andmistakesbythediver may lead to serious injury or death. Duringdiveswithseveralgasmixtures, always make sure you are breathing from the tankyouintendedtobreathfrom.Markall yourtanksandregulators,sotheycanunder nocircumstancesbemixedup!Beforeevery dive and after changing a tank, make sure that each gas mixture is set to the correct value for the corresponding tank.Predictive decompression prognosisThecalculationofdecompressiondatais based on the assumption that the change ofgasmixturewillbeperformedatthe previouslyselectedswitchdepth(MOD gas d).Ifadiverignorestherequired changeorchangesthemixturebelatedly, Aladin 2Gwillreadjustthedecompression calculationaccordingly.Incaseofan ignored switch the dive computer will then baseitscalculationsontheassumption thatthediverwillascendtothesurface with gas 1.Alternate displays during a dive with two gases) NOTE: Alldisplaystimeoutafter5seconds and the default display is shown again. (Onlyexceptionisthetemperature, screen 2 below.)50SCUBAPRO ALADIN 2G8. Diving with two gas mixtures1 Thedefaultdisplayshowsthepre-dictivedecompressionprognosis, which assumes the diver will switch to thedecogasatthespecifiedswitch depth.Inthebottomleftcornerthe temperatureisdisplayedunlessthe current depth is 1m/3ft shallower than the max depth, in which case the max depth is displayed.2 Uponpressingtherightbutton,the temperature and the current O2% are shown in the lower row. O2% will time outafter5secwhilethetemperature remains.3 Uponpressingtherightbutton, GAS 1orGAS dappearsinthe middlerowtoindicatethecurrently activegasandtheMODappearsin thebottomleftcorner.GAS 1or GAS dwilltimeoutafter5seconds unlesstherightbuttonispressed again.4 Incasethatgas1istheactivegas, pressingtherightbuttononemore timeshowsO2%ofgas1inthebot-tom right corner and the decompres-sion information in case the deco gas isnotused(decompressioninforma-tionrelativetogas1only).Thisis thecalculationthatAladin 2Gwould switch to in case, having reached the switch depth, the diver did not confirm theswitch.Thedecompressioninfor-mation and the O2% blink.5 If an MB level greater than L0 is active, pressingtherightbuttononemore timeshowsthepredictivedecom-pressioninformationandinthebot-tom left corner the currently active MB level.6 Pressing the right button again shows thepredictivedecompressioninfor-mation relative to L0 together with the L0 symbol at the bottom left.7 Onemorerightbuttonpushshows thedecompressioninformationrela-tivetoL0ifonlygas1isused,with thedecompressioninformationand the O2% of gas 1 blinking.8 Upon pressing the right button again, the time of day appears in the middle row.51EnglishSCUBAPRO ALADIN 2G8. Diving with two gas mixturesGas 1 active, MB level L0DEPTH DIVE TIMESTOPDECOCNS O2%DEPTH DIVE TIMESTOPDECODEPTH DIVE TIME DEPTH DIVE TIMEO2 mix of the currently active tankMax depthTime STOPDECODEPTH DIVE TIMEDecompression information assuming that you finish the dive with gas 11 3 8 4Predictive decompression informationCNS O2%O2 mixgas 1 Temperature2MOD gas 1Gas d active, MB level L0CNS O2%DEPTH DIVE TIMESTOPDECODEPTH DIVE TIME DEPTH DIVE TIME1 3 8MOD gas dMax depthCNS O2%Time Predictive decompression informationDEPTH DIVE TIMESTOPDECOTemperature2O2 mix of the currently active tankGas 1 active, MB level L1-L5CNS O2%DEPTH DIVE TIMEDECOSTOPDEPTH DIVE TIMEDEPTH DIVE TIMEMax depthDECODEPTH DIVE TIMESTOPDecompression information assuming that you finish the dive with gas 11 3 4DEPTH DIVE TIMEDECOSTOPSTOPSLOWDECODEPTH DIVE TIME 6STOPDECODEPTH DIVE TIME 7 8 1Predictive decompression information relative to active MB levelCNS O2%MOD gas 1DEPTH DIVE TIMEDECOSTOP2TemperatureO2 mixgas 1 Time Predictive decompressioninformation relative to L0Decompression information relative to L0, assuming that you finish the dive with gas 1Active MB level Predictive decompression information relative to active MB level5O2 mix of the currently active tankGas d active, MB level L1-L5CNS O2%DEPTH DIVE TIMEDECOSTOPDEPTH DIVE TIMEMOD gas dO2 mix of the currently active tankMax depthDEPTH DIVE TIMEDECOSTOPActive MB level Predictive decompression information relative to active MB levelSTOPSLOWDECODEPTH DIVE TIMEPredictive decompression information relative to L0DEPTH DIVE TIMETime 1CNS O2%Predictive decompression information relative to active MB levelDEPTHDECOSTOPTemperature1 3 5 6 8 2 52SCUBAPRO ALADIN 2G8. Diving with two gas mixturesChanging the gas mixtureSLOWNODEPTH DIVE TIMESwitch depthSwitch to gas d4s MOD gas dAfterimmersion,Aladin 2Gautomatically selects gas 1. WARNINGWhenduringanascenttheswitchdepthis reached (MOD gas d), an audible warning goes offandGAS d,itsMODandO2%blinkfor 30 seconds.Procedure:1. Switch to the regulator with gas d and start breathing.2. Conrm the change by pressing within 30 seconds. GAS d and the oxygen fraction of gas d is displayed for 5 seconds without blinking.Tointerrupttheswitchprocessatany point, press.SLOWNODEPTH DIVE TIMEChange to gas d conrmedNo change of gas mixture: Ifadiverfailstoconrmthechangeof gasmixtureorinterruptstheswitching procedurebypressing,Aladin 2G displays GAS 1, the MOD and the oxygen fraction for 5 seconds. Aladin 2G continues to calculate with gas 1 only and adapts the decompression calculation accordingly.) NOTE: If after the decompression calculation hasreadjusteditselftoreectthe failedswitchthedivergoesagain belowtheswitchdepth(MODof gas d),Aladin 2Gwillreverttothe decompressioncalculationthat considersgas dalso,sinceupon ascendingagainthediverwillhave arenewedopportunitytoperform theswitchoncetheswitchdepthis reached.Failed or interrupted switchSLOWNODEPTH DIVE TIMEMOD gas 1Belated change of gas mixture: A diver can catch up on a required change to gas d until he reaches the surface. 1. Initiate the switching process by press-ing. Aladin 2G displays GAS d, MOD and the oxygen fraction of gas d blinking for 30 seconds. 2. Switch to the regulator with the deco gas mixture and start breathing. 3. Conrm the change by pressing . GAS d and the oxygen fraction of the deco gas is displayed for 5 seconds without blinking. The decompression calculation will readjust accordingly. (Press to interrupt the switch process at any time.)53EnglishSCUBAPRO ALADIN 2G8. Diving with two gas mixturesSubmerging again after a change to gas d: IfafterachangetogasdtheMaximum OperatingDepth(MOD)ofgasdis exceeded,theppO2 maxwarningwill appear ->25.Changebacktogas1,whichissuited forthisdepth,orrisetotheMaximum Operating Depth of gas d. Failure to do so can result in oxygen poisoning.1. Initiate the switching process by press-ing. Aladin 2G displays GAS 1, MOD and the oxygen fraction of gas 1 for 30 seconds. 2. Switch to the regulator with gas 1 and start breathing. 3. Conrm the change by pressing. GAS 1 and the oxygen fraction of gas 1 is displayed for 5 seconds without blinking. Afterwards the decompression calculation will readjust accordingly. 9. Dive planner54SCUBAPRO ALADIN 2GInput of the surface interval by pushing / DEPTHNO STOPDEPTH DIVE TIMECNS O2%Icon for MB level L1-L5Enter the dive plannerNo-stop time orMB no-stop timeSet desired depth (and)NONo-dive warning(Do Not Dive)Duration of the warningCNS O2%Dive planner symbolSelect dive planner or until PLnif if rep. diveCNS O2%The no-dive warning and its duration are displayed if Aladin 2G detects an increased risk due to the accumulation of microbubbles.Enter the dive planner with. The input window for the time interval is displayed if there wasaremainingdesaturation(DESAT)beforethedive planner has been selected. This surface interval between now and the beginning of the dive can be changed with and in steps of 15 minutes. Aladin 2G displays the CNS O2% value and the altitude section to which you may not rise at the end of the selected surface interval.If the no-dive warning and its duration has been displayed, Aladin 2G proposes this time rounded up to the next 15 minutes as surface interval. If the proposed interval is shortened, the no-dive warning appears.9.DIVE PLANNERAladin 2Ghasadiveplannerwhich allowstheplanningofno-stopdivesand decompression dives.Basis of the planning:selected fraction of oxygen and MODselected water type selected MB levelwater temperature of the most recent divealtitude range (if any)status of saturation at the time the dive planner is selectedassuming a normal workload of the diver and observance of the prescribed ascent rates assumption: the change to gas d is performed at the selected MOD of gasd. 9.1Planning a no-stop diveToselectthediveplannerAladin 2Gmust beinusermode(timeofdaydisplay). Push or until the symbol for the dive planner PLn appears. (The dive planner cannot be selected in gauge mode.) 9. Dive planner55SCUBAPRO ALADIN 2GEnglishConrm the displayed interval with (if applicable).Withandsetthedepthfor which you want to know the no-stop time.If an MB level has been selected (L1-L5), the MB no-stop time is shown. DepthsdeeperthantheMODforthe selected gas (O2 mix) are not displayed.If the deco gas option is turned on, only the depth between the MOD of gas 1 and the MOD of gas d are displayed. On page 30 you will find further information and safety considerations regarding the no-dive warning.9.2Planning a decompression diveCNS O2%DEPTHNO STOPDIVE TIMEConrm the desired depth with 1. Activate the dive planner for a no-stop dive ->54.2. Set the desired depth with and , then switch into decompression planning by pushing. Aladin 2G shows the bottom time (no-stop time + 1 minute) and the appropriate decompression information or level stop data respectively.STOPNODECOCNS O2%DEPTH DIVE TIMESet desired bottom time with and 3. Add asks that you set the bottom time. This is done with and. Aladin 2G calculates the decompression information for this set bottom time. If an MB level (L1-5) is selected, Aladin 2G calculates the level stop data.CNS O2% values higher than 199% will be displayed as 199 %.Ascenttimegreaterthan99minutesis displayed as Deco stop depth deeper than 27m (90ft) is displayed as : CNSO2equalorgreaterthan75%: CNS O2% symbol starts ashingCNSO2equalorgreaterthan100%: CNS O2% symbol and CNS O2% value are ashing.MB level stop deeper than 27m (90ft): MB level will be reduced.9.3Leaving the dive plannerBypushingonceortwiceyoucan exit the dive planner. This also occurs after three minutes without operation.10. Logbook56SCUBAPRO ALADIN 2G10.LOGBOOK10.1SurveyA dive is entered in the logbook if the dive timeislongerthan2minutes.Aladin 2G recordstheprolesofabout25hoursof diving. In Apnea mode all dives are entered inthelogbookwithouttimelimitandat least6hofApneaproleswillbestored. This information can be transferred to a PC withthestandardinfraredinterface(IrDA) andtheWindowssoftwareSmartTRAK. Alldivesinthememorycanbedisplayed directly on the dive computer.10.2OperationFromthetimeofdaydisplayyoucan select the logbook with. until Surface interval Iftherewasaremainingdesaturationtime (DESAT)beforeselectingthelogbook,the time since the last dive (surface interval) is displayed.Page 1With you enter the logbook. Themostrecentdiveisdisplayed(dive number 1).There are 3 pages for each dive. SLOWDEPTH DIVE TIMEDive time Dive numberDate of the diveLogbook iconBattery performanceO2 mixMax depthFrom here you can: a) get more information about the displayed dive by pushing (see below, page 2). Aladin 2G displays further information about the selected dive.b) select other dives.Each time you push or causes a jump to the next or previous dive.AttheendofthelogbookAladin 2G displays statistic information ->57.Page 2CNS O2%Repetitive dive number Starting timeCNS value at the end of the diveMinimum temperatureAltitude range (if >0)Push to get more information about the dive.10. Logbook57SCUBAPRO ALADIN 2GEnglishPage 3Ifadiveisstartedwithinadaptationtime (afterachangeofaltitude),theadaptation timeisdisplayedinsteadofthesurface interval.Duration of surface interval (only with repetitive dives)SOS if applicableMB level (at the beginning of the dive) O2 mix deco gas (if a switch has taken place during the dive)Further possible information about the dive:SLOWToo fast ascent* (page 1)STOPDECO Ignored decompression stop* (page 1)Ignored decompression stop* (page 3)Diving in SOS mode (gauge mode) (page 3)Altitude range (page 2)MB level dive (L1-L5) (page 3)STOPIgnored MB level stop* (page 1)DESATDesaturation was reset before the dive (in set 1) (page 1, 2)DESATDesaturation was reset before the dive by removing the battery (page 1, 2)Battery quality factor has been 3 bars or less during the dive (page 1, 2, 3)Diving in gauge (page 1, 2, 3)AVGAverage depth (gauge mode)(page 3)No-dive warning after the dive (page 1)Apnea mode dive (page 35)*Alarms during the divegetsyoubacktothedivelist(rst level screen within logbook). From here you can advance to the next dive of interest and presstoretrievemoreinformation about that dive etc.Statistic informationFrom the time of day display you can get thefollowingstatisticinformationoverall dives. Push, and: SLOWDEPTH DIVE TIMECumulative bottom timeDeepest dive Longest diveNumber of dives Leaving the logbookBypushingonceortwiceyoucan exit the logbook.Thelogbookclosesautomaticallyafter 3 minutes without operation.11. Settings58SCUBAPRO ALADIN 2G11.SETTINGS11.1Altitude adjustmentThealtitudeadjustmentdoesnotaffect altitude ranges nor any calculations.Adjust the altitude indication to your current altitude.1. Starting from the time of day display push or until the mountain symbol and the altitude appear.2. Conrm that you wish to change the displayed altitude by pushing.The altitude starts to ash.3. Change the altitude in increments of 10m / 50ft by pushing or.4. Conrm the selected altitude with. 11.2Menu set 1Withmenuset1orSmartTRAKyou cancongurethefollowingitems(dive functions):Setting Range Default PageDepth alarm 5 - 100m (20 - 330ft) on/off 40m (130ft),off 58Dive time alarm 5-195min, on/off 40m (130ft),off 59Safety stop duration 1-5min 3 minutes 59Maximum partial pressure ofoxygen (ppO2 max) 1.2-1.6bar 1.4bar 59Time limit to reset the O2% mix to airno reset / 1 - 48hrs no reset 59Deco gas on/off off 60PDIS (Profile Dependent Intermediate Stop)on/off off 60Unit system metric/imperial 60Water type on (salt water)/off (fresh water)on (salt water) 60Backlight illumination duration 2-12s ; push on / push off6s 61Audible attention signals on / off (SmartTRAK: selective)on 61Water contacts on / off on 61Reset desaturation on / off no reset 62NOStartingfromthetimeofdaydisplaypush or until set 1 appears.Conrm that you wish to enter into the menu of set 1 by pushing.Once entered into the menu you can scroll with and through the menu. Setting the depth alarmDEPTH DIVE TIMEAlarm depth Status11. Settings59SCUBAPRO ALADIN 2GEnglish1. Conrm that you wish to change the depth of the alarm or to switch it on or off by pushing. The depth starts to ash.2. Change the depth in increments of 1 m/5 ft by pushing or.3. Conrm the selected depth with. On or Off starts to ash.4. On indicates activated, Off indicates deactivated. switches between On and Off.Conrm the selected status with.See also page 23.Setting the dive time alarmDEPTH DIVE TIMEAlarm time Status1. Conrm that you wish to change the time of the dive time alarm or to switch it on or off by pushing. The alarm time starts to ash.2. Change the alarm time in increments of 5 minutes by pushing or.3. Conrm the selected alarm time with . On or Off starts to ash.4. On indicates activated, Off indicates deactivated. Switch between on or off by pressing.Conrm the selected status with. See also page 23,23.Setting the safety stop durationDuration of the safety stop1. Conrm that you wish to change the duration of the safety stop by pushing . The duration starts to ash.2. Change the duration in increments of 1 minute or to off (inactive) by pushing or.3. Conrm the selected duration with .Setting the maximum partial pressure of oxygen (ppO2 max) ppO2 max1. Conrm that you wish to change the ppO2 max by pushing. The cur-rent value starts to ash.2. Change the value in increments of 0.05bar by pushing or.3. Conrm the selected value with.The ppO2 max setting is valid for gas 1 and the deco gas.Setting the time limit to reset the O2% mix to air Time limit to reset O2 mix to air1. Conrm that you wish to change the time limit of the reset by pushing. The current setting starts to ash.2. Change the time limit by pushing or.(1 - 48hrs or no reset: h)3. Conrm the selected value with.11. Settings60SCUBAPRO ALADIN 2GEnabling two-gas diving1. Conrm that you wish to enable two-gas diving by pushing. On or off starts to ash.On indicates the deco gas is active, off indicates that only gas 1 will be used for decompression calculations. 2. Switch between on and off with . 3. Conrm your choice with.PDIS (Prole Dependent Intermediate Stop)1. Conrm that you wish to enable PDIS by pushing. On or off starts to ash.On indicates that the PDIS timer will be automatically activated during the dive, off indicates that PDIS will be inactive.2. Switch between on and off with .3. Conrm your choice with.Selecting the units1. Conrm that you wish to change the units by pushing. The selected units are displayed (m / ft / C / F).2. Push. m or ft starts to ash.3. Switch with between m and ft.4. Conrm the selected unit with. C or F starts to ash.5. Switch with between C and F.6. Conrm the selected unit with. Selecting the water type1. Conrm that you wish to change the selected water type by pushing. On or off starts to ash.Salt on indicates salt water, salt off indicates fresh water. 2. Switch with between salt on and salt off. Conrm the water type with.11. Settings61SCUBAPRO ALADIN 2GEnglishSetting the backlight duration1. Conrm that you wish to change the duration of the backlight illumination by pushing. The value starts to ash.2. Change the duration with. (2-12s or push on / push off)3. Conrm it with.Switching the audible attention signals on and offWiththisoptionyoucanswitchoffthe audibleattentionsignalsonly(theaudible alarms remain active). Refer to page 20 to see this distinction.1. Conrm that you wish to change the setting of the audible attention signals by pushing. On or off starts to ash.2. Switch between on or off by press-ing.3. Conrm the setting with.Switching the water contacts on and offOn submerging in water the water contacts switch on Aladin 2G automatically. WARNINGIfyouchosetheoptionWatercontacts off,Aladin 2Gwillturnonwithadelayof upto1minuteintothedive.Thiswillaffect functioning of the computer.Makesurethatthecomputerisonbefore starting the dive. 1. Conrm that you wish to change the setting of the water contacts by pushing . On or off starts to ash.2. Switch between on or off by press-ing.3. Conrm the setting with.11. Settings62SCUBAPRO ALADIN 2GResetting the remaining saturation WARNINGDiving after a reset of the remaining saturation mayleadyouintopotentiallyhazardous situationswhichcouldresultindeathor serious injury.After a reset of the remaining saturation do not dive for at least 48 hours. Ifyoudiveafterresettingtheremaining saturation the computer will miscalculate your decompression,whichmayresultinserious injury or death. Reset the remaining saturation only if you know you will not be diving, ying or going to higher altitude for the next 48 hours.Resettingthedesaturationshouldonlybe donewhenthereisavalidreason,e.g. loaningthecomputertosomebodywho hasnotdivedin48hoursormore.When the computer itself has remaining saturation youmustassumefullresponsibilityforthe consequencesofresettingtheremaining saturation.DESATDESAT1. Conrm that you wish to reset the displayed saturation by pushing. On starts to ash.2. Switch between on or off by press-ing.3. Conrm the setting with. If you have selected off, Code and 000 appear.4. Set the rst digit by pushing and . Conrm with.Repeat point 4 for the next 2 digits. If you entered the right code the desaturation will be reset to zero (desat off). Code: 31311. Settings63SCUBAPRO ALADIN 2GEnglish11.3Menu set 2With menu set 2 or SmartTRAK you can congure the following items:Setting Range Default PageAlarm clock 0 - 23h 59min, on/off 12:00, off 63UTC (Universal Time Change) zone13hrs, increments: 15min 63Time of day hours:minutes 6424 or AM/PM setting 24 (off) / AM/PM (on) 64Date 64Display contrast1 (low) -12 (high) 4 64IrDA speed setting (only set 2) low / high low 65Sound on / off on 65Show Aladin 2G electronic ID 65NOStarting from the time of day display push or until set 2 appears.Conrmthatyouwishtoenterintothe menu of set 2 by pushing.Once entered into the menu you can scroll with and through the menu. Setting the alarm clock timeThe alarm clock goes off only at the surface. Sound must be turned on in set 2.1. Conrm that you wish to set the alarm time by pushing. The hours start to ash.2. Set the hours by pushing or .3. Conrm the setting with. The minutes start to ash.4. Set the minutes by pushing or .5. Conrm the setting with. On or off starts to ash.6. On indicates activated (time of day display shows ), off indicates deactivated. Switch between on or off by press-ing.7. Conrm the selected status with.Setting the UTC offset (coordinated universal time)Thissettingallowsyoutoquicklysetthe watch to a new time zone without affecting the actual time setting. 1. Conrm that you wish to set the UTC offset by pushing. The hours start to ash.2. Set the hours by pushing or (13hrs).3. Conrm the setting with. The minutes start to ash.4. Set the minutes in increments of 15 minutes by pushing or.5. Conrm the selected status with.11. Settings64SCUBAPRO ALADIN 2GAdjusting the time of dayTime of day Youcanadjustittoyourtimezoneeither inthismenuorusingtheUTCoffset(see above).1. Conrm that you wish to adjust the time of day by pushing.The hours start to ash.2. Set the hours by pushing or.3. Conrm the setting with. The minutes start to ash.4. Set the minutes by pushing or .5. Conrm the setting with. Selecting 24 hours or AM/PM setting1. Conrm that you wish to change the setting by pushing. On or off starts to ash.2. Switch with between on (AM/PM) and off (24h).3. Conrm the setting with. The24h-AM/PMsettinginuencesthe display of the date (see below).Adjusting the dateDate (24h setting)Day / Month / YearDate (AM/PM setting)Month / Day / Year1. Conrm that you wish to adjust the date by pushing. The rst day (month) starts to ash.2. Set the day (month) by pushing or .3. Conrm the setting with. The month (day) starts to ash.4. Set the month (day) by pushing or .5. Conrm the setting with. The year starts to ash.6. Set the year by pushing or.7. Conrm the setting with. Adjusting the display contrast1. Conrm that you wish to adjust the display contrast by pushing. The current setting starts to ash.2. Set the contrast by pushing or .Low contrast: (1), high contrast: (12)3. Conrm the setting with. 11. Settings65SCUBAPRO ALADIN 2GEnglishSelecting the IrDA speedThedefaultsettingislow.Forfaster downloads you can set it to high, but not all IrDA interfaces are compatible with high. 1. Conrm that you wish to change the IrDA speed by pushing. Lo (low) or hi (high) starts to ash.2. Switch with between low and high.3. Conrm the setting with. Low: 9600 bits/second High: max 57 600 bits/second Switching the sound on and off WARNINGIfyouturnoffthesound,thebuzzeris effectivelydeactivated.Youwillhaveno audiblewarnings(alarmsandattention messages)!Withoutaudiblewarningyou could get into potentially hazardous situations, which could result in death or serious injury.You must assume full responsibility for turning off the sound.1. Conrm that you wish to change the setting by pushing. On or off starts to ash.2. Switch with between on and off.3. Conrm the setting with. If you have selected off, Code and 000 appear.4. Set the rst digit by pushing and . Conrm with.Repeat point 4 for the next 2 digits. If you enteredtherightcodethesoundwillbe turned off.Code: 313) NOTE: Settingthesoundtooffapplies alsotosurfacefunctions(mountain alarm,wake-upalarm,changeof altitude range).Showing the hardware electronic ID of Aladin 2GNOID NumberThisnumberisneededwhenreporting problems or for other maintenance related issues.11. Settings66SCUBAPRO ALADIN 2G11.4Menu set 3 (Apnea)Withmenuset3orSmartTrakyoucan congure the following items:Setting Range Default PageDual Depth alarm5-100m, 5-100m, on/off10m (35ft), off 20m (65ft), off66Incremental depth alarm5-100m, dn(down)/ up/bth(both)/off5.0m (20ft), off 66Dive time interval warning15s-10min, on/off30s, off 66Surface interval warning15s-10min, on/off1 min, off 67Ascent speed alarm0.1-5 m/s, (1-15 ft/s) on/off1 m/s (3 ft/s), off67Water density1.000-1.050 kg/l(Fresh water ~1.000,Ocean ~1.035)1.025 kg/l 67Startingfromthetimeofthedisplaypush or until set 3 appears.Conrmthatyouwishtoenterintothe menu of set 3 by pushing.Once entered into the menu you can scroll with and through the menu.Setting the Dual Depth alarmWith this alarm you can set two independent depth alarms.1. Conrm that you wish to change the settings of the Dual Depth alarm by pushing. First depth value starts to ash.2. Scroll rst depth with or.3. Conrm the rst depth alarm with. Second depth alarm starts to ash.4. Scroll second depth with or .5. Conrm the second depth alarm with . On/off starts to ash.6. Switch between on/off with.7. Conrm the setting with.Setting the incremental depth alarmWith this alarm you can set repetitive depth alarms at given depth increments.1. Conrm that you wish to change the settings of the incremental depth alarm by pushing. Increment value starts to ash.2. Scroll value with or.3. Conrm the increment with. Up/Down/Both/Off starts to ash.4. Switch between Up/Down/Both/Off with . 5. Conrm the setting with.Setting the dive time interval warningWith this alarm you can set time alarm that repeats on given intervals.1. Conrm that you wish to change the settings of the dive time interval warning by pushing. Interval value starts to ash.2. Scroll time value with or.3. Conrm the interval time with. On/off starts to ash.4. Switch between on/off with.5. Conrm the setting with.11. Settings67SCUBAPRO ALADIN 2GEnglishSetting the Surface Interval warningWiththisalarmyoucansetatimefor recoveryorstarttimeforrepetitivedive when training against given tables.1. Conrm that you wish to change the settings of the Surface Interval warning by pushing. Time value starts to ash.2. Scroll time value with or.3. Conrm the surface time with. On/off starts to ash.4. Switch be